Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeec858f8e0dac9f…

MALICIOUS

PDF

116.8 KB Created: 2021-06-20 08:37:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3a905d4c6697d5b52f7c0082b31e524d SHA-1: 7e870ef30d9d5681839eae37a9e8ac86684b24a3 SHA-256: aeec858f8e0dac9f7499d7438303add2d27469f6e4a2160470681a36421df27a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to compromised websites, many of which are hosted on disposable domains or use link farms for SEO manipulation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to exploit users through deceptive content, possibly related to the 'Path of Exile' game mentioned in one of the URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://madopin.com/calisma2/files/uploads/13077073391.pdf In PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16085b17bdfebe---rimorowanava.pdfIn PDF document text
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609068e066fe4---76490488350.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f19069f4b3---1060736642.pdfIn PDF document text
    • https://isleo.com/i_photos/file/15624560811.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/ec16178d7ccf3b0d1d11db27977382ce/73418196533.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file/%5C/81226862719.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vlucteubeck52q1p855i9s7bv4/bukifunor.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160994e6a83ee2---41486005419.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160815d12d6510---37582853020.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c065b19a493---korume.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160789e1f57456---gonux.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/gasapaguk.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f8a376547---91949812271.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1fdb790426---fewonezepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=path+of+exile+monstrous+treasurePDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000197d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197D0 5076 bytes
SHA-256: 776f0fa740f15b0cf8bfd2ba1b01aac9d8ca4aea968729554fc0811587fd4c3b
font_01_sfnt_off0001a8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8F0 11140 bytes
SHA-256: da250c20ca576fccd6a7d5203b894ee05330bed747d55f425abbbc42f3b3583a

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